Henrik said:
Hi Henrik
It also seems to me that my FET pinlayout is wrong 😉
Thanks again!!
Seems like I will have to make an ultra final layout🙄
Magura 🙂
So here is the ultra final layout 😉
I realized that I had forgotten the back to back zeners....I guess they could turn out to come in handy, at least they won't harm anything.
Magura 🙂
I realized that I had forgotten the back to back zeners....I guess they could turn out to come in handy, at least they won't harm anything.
Magura 🙂
Did you draw a schematic? Please post it if you did. It's a bit tough to follow your tracks😉
Steen🙂
BTW. I will save my 0,1uF Teflon caps for this one😀 😀
Steen🙂
BTW. I will save my 0,1uF Teflon caps for this one😀 😀
A schematic??? What's that???? 😎
I have to admit that I am too lazy to make a schematic when 90% is a copy of Kristian's version. I have basicly added bypass caps, gain adjustment and converted the 680R power 10W power resistors into 4*2K7 3W metal film.
Magura 🙂
I have to admit that I am too lazy to make a schematic when 90% is a copy of Kristian's version. I have basicly added bypass caps, gain adjustment and converted the 680R power 10W power resistors into 4*2K7 3W metal film.
Magura 🙂
That explains the IRF parts, turning the wrong way😀
Well, the circuit looks good to me as it is, maybe Henrik can find something to pick on 😀 😀
Very good idea, those 10Watters are hard to come by.
Edit again, arent those 680r's supposed to be 750r's?
Steen😎
steenoe said:
Nope, the explanation for that is unfortunately very simple. I simply remembered the pin layout being different, and felt no need to check the datasheet🙄
Magura🙂
I just saw this and realised it was not very elegantly put
No offense, whatsoever
I am confident that this will turn out just great🙂
Steen.😎
steenoe said:I just saw this and realised it was not very elegantly put
I am confident that this will turn out just great🙂
Steen.😎
Feel free to have a laugh on me 🙂
It is usually a good sign when people can remember your mistakes.....that usually means that you don't make many.
No offense taken.
Magura 🙂
Hmmm, just studied yor layout a bit more!
The 0,22uF, is that a bypass for the output cap?`You saved a lot of space for that one! Wouldn't it be better to give room for one big MKP??
Steen.
Yep, that was the first time😀 😀
The 0,22uF, is that a bypass for the output cap?`You saved a lot of space for that one! Wouldn't it be better to give room for one big MKP??
Steen.
Yep, that was the first time😀 😀
Yes the 0.22uF is bypass for the output cap. AFAIK there is little point in putting an output cap bigger than 10uF in this circuit, but if I should turn out to be wrong about that, there is room for at least 20uF MKP.
The 0.22uF film/foil cap simply need that much space, and I sure like to have a film/foil cap for bypass for the output cap.
Magura 🙂
The 0.22uF film/foil cap simply need that much space, and I sure like to have a film/foil cap for bypass for the output cap.
Magura 🙂
I just finished etching the first PCB this evening, PCB's of that size are sure a PITA, it's like all the problems grows with the size of the board.
The board is about A4 size (200mm*300mm).
http://www.briangt.com/gallery/album05
Magura 🙂
The board is about A4 size (200mm*300mm).
http://www.briangt.com/gallery/album05
Magura 🙂
Has anybody tested all BOSOZ preamps and compared what sounds the best.
Normal BOSOZ, with CSS and with X-ing.
What did your expirience show till now.
Greetings
Normal BOSOZ, with CSS and with X-ing.
What did your expirience show till now.
Greetings
promitheus said:
I have build a few of them, but your question is too wide to give a reasonable answer. There are so many configurations of each type that you will find it hard to find a general answer.
Magura 🙂
What is the function of the two single diodes on the right??
I will include the zener mosfet protection, but find it hard to make a change to something I do not fully understand.
http://web.vip.hr/pcb-design.vip/xccs-pwr.gif
Cheers
Magura🙂
I will include the zener mosfet protection, but find it hard to make a change to something I do not fully understand.
http://web.vip.hr/pcb-design.vip/xccs-pwr.gif
Cheers
Magura🙂
... yes, and to protect the Hexfet (avoiding the reverse G-D voltage) when the power goes down.
Marcello
Marcello
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